Comparative analysis of IEEE 802.11p and MS-Aloha in Vanet scenarios

Cozzetti, Hector Agustin; Scopigno, Riccardo; Casone, Luca; Barba, Giuseppe

doi:10.1109/apscc.2009.5394140

Cited by 20 publications

(16 citation statements)

References 7 publications

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“…They measured the distributions of the channel access delay, of the distance within nodes which are sending at the same time and of the number of consecutive packet drops. A similar study was published by Cozzetti et al in [12]. They also compared 802.11p with an own MAC scheme called RRAloha+ and it's improved version MS-Aloha.…”

Section: Related Workmentioning

confidence: 73%

Performance of CAM based safety applications using ITS-G5A MAC in high dense scenarios

Kloiber

Strang

Röckl

et al. 2011

2011 IEEE Intelligent Vehicles Symposium (IV)

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Abstract-ETSI ITS-G5 is the current vehicle-to-vehicle communication technology in Europe, which will be standardized by ETSI TC ITS 1 . It is based on IEEE 802.11p and therefore uses a CSMA/CA scheme for Media Access Control (MAC). In this paper we analyze the performance of Cooperative Awareness Message (CAM) based safety applications using the ETSI ITS-G5 MAC technology in a challenging scenario with respect to MAC issues: A suitable freeway segment with 6 lanes in each direction. The freeway scenario is thoroughly modeled and implemented in the well known ns-3 simulation environment. Based on this model, the paper shows the performance of CAM based safety applications under MAC challenging conditions. We provide a set of simulation results resting upon a particular performance metric which incorporates the key requirements of safety applications. Finally we analyze two concrete example scenarios to determine how reliable CAM based safety applications are in high dense traffic scenarios with respect to MAC issues.

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Section: Related Workmentioning

confidence: 73%

Performance of CAM based safety applications using ITS-G5A MAC in high dense scenarios

Kloiber

Strang

Röckl

et al. 2011

2011 IEEE Intelligent Vehicles Symposium (IV)

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“…In relation to the system throughput, the RR-ALOHA is better than the CSMA/CA scheme when the Contention Window (CW) size of the backoff protocol is fixed to fifteen slots. In [14], the performance of CSMA/CA and MS-Aloha (Mobile Slotted Aloha which is based on RR-Aloha) protocols are compared. Their results reveal that MS-Aloha achieves a packet delivery ratio higher than CSMA/CA when the transmission range is between 0 and 120 meters.…”

Section: Related Workmentioning

confidence: 99%

Performance Analysis of Random Access Strategies for Short Message Exchange in VANETs: A Social Approach

Hernandez-Atonal

Martínez-Piñón

Rivero-Ángeles

2012

2012 Seventh International Conference on Broadband, Wireless Computing, Communication and Applications

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Major applications of Vehicular Ad Hoc Networks (VANETs) are strongly related with safety applications like emergency warning, rescue operations, information about road conditions and accident alert. However, little attention has been given to the design of comfort applications with social approach, such as the connecting of people with common interests (like twitter or SMS services). Most of the work reported in the literature in VANETs is focused on clustering and routing schemes for the dissemination of queries in the network; however, the impact of the media access control (MAC) protocols has been largely overlooked. In this work is studied the transmission of short messages and different MAC strategies for social network applications, to operate in VANETs and pedestrian environments, are proposed. Specifically, a comprehensive study of two main random access protocols: CSMA/CA and S-ALOHA and two of the most common backoff algorithms: Uniform Backoff (UB) and Binary Exponential Backoff (BEB) is presented. As an additional feature, the proposal of a MAC hybrid strategy to improve the system performance in terms of the success probability and delay is developed.

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“…However, very few papers, such as [8], focus specifically on VANETs. To the best of our knowledge, most of these studies use simulations to evaluate the performances of these networks and/or assume simplified interference models.…”

Section: B Related Workmentioning

confidence: 99%

Vehicular Ad-hoc Networks using slotted Aloha: Point-to-point, emergency and broadcast communications

Błaszczyszyn

Mühlethaler

Achir

2012

2012 IFIP Wireless Days

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The aim of this paper is to analyze the Aloha medium access (MAC) scheme in one-dimensional, linear networks, which might be an appropriate assumption for Vehicular Ad-hoc NETworks (VANETs). The locations of the vehicles are assumed to follow a homegeneous Poisson point process. Assuming powerlaw mean path-loss and independent point-to-point fading we study performance metrics based on the signal-over-interference and noise ratio (SINR). In contrast to previous studies where the receivers are at a fixed distance from the transmitter, we assume here that the receivers are the nearest neighbors of the transmitters in the Poisson process and in a given direction. We derive closed formulas for the capture probability and for the density of progress of a packet sent by a given node. We compute the mean delay to send a packet transmitted at each slot until successful reception. We also evaluate an upper bound to discover the neighborhood within a given space interval. We show that we can include noise in these models.

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Comparative analysis of IEEE 802.11p and MS-Aloha in Vanet scenarios

Cited by 20 publications

References 7 publications

Performance of CAM based safety applications using ITS-G5A MAC in high dense scenarios

Performance of CAM based safety applications using ITS-G5A MAC in high dense scenarios

Performance Analysis of Random Access Strategies for Short Message Exchange in VANETs: A Social Approach

Vehicular Ad-hoc Networks using slotted Aloha: Point-to-point, emergency and broadcast communications

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